Operation CHARM: Car repair manuals for everyone.

SCV

The UMO has a feature called Speed Compensated Volume (SCV). In order to activate the SCV:
1. Set the volume at the desired level.
2. Rotate the control ring located behind the upper knob clockwise to adjust the SCV. The radio will automatically adjust the volume to overcome noise at any speed. The volume level will remain the same to you as you drive. In order to deactivate the SCV, turn the control knob all the way down. The detents on the control ring allow for increased volume compensation at a faster rate of speed.